Browsing Physics and Astronomy by Title
Now showing items 208-227 of 770
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Exact results in QFT: Minimal Areas and Maximal Couplings
(University of Waterloo, 2016-09-14)This thesis is devoted to a two-pronged study of non-perturbative quantum field theory. In Part I we focus on the four-dimensional super conformal $\mathcal{N}=4$ Yang Mills theory. We compute smooth Wilson loops and ... -
Exact Results in Supersymmetric Gauge Theory
(University of Waterloo, 2016-08-30)Exact results are a key component for understanding any physical theory. Unfortunately in the context of quantum field theory (QFT) they are in general impossible to obtain, and we need some sort of approximations. However ... -
Exact Solutions and Black Hole Stability in Higher Dimensional Supergravity Theories
(University of Waterloo, 2012-06-20)This thesis examines exact solutions to gauged and ungauged supergravity theories in space-time dimensions D⩾5 as well as various instabilities of such solutions. I begin by using two solution generating techniques for ... -
Exotic Circuits for Enhanced Quantum Algorithms and Computation
(University of Waterloo, 2023-08-09)Quantum circuits play an essential role in many disciplines of quantum information science. They can not only be represented in the traditional gate-based paradigm, but also an alternative measurement-based paradigm. The ... -
Experimental and theoretical demonstration of the feasibility of global quantum cryptography using satellites
(University of Waterloo, 2014-10-15)Information security is a growing concern in our modern world, where almost everything can be done online. To protect security, classical encryption protocols, such as RSA, are used. These encryption protocols are almost ... -
Experimental and theoretical investigations of radio-frequency and optical trapping potentials for atomic ions
(University of Waterloo, 2020-10-08)Over the years, trapped ion have emerged as one of the premier candidates for universal quantum simulation due to its long coherence time, low initialization and detection errors, robust high-fidelity gate sets and fully ... -
Experimental Investigation into Spatial Quantum Optical Properties for Satellite Targeting through the Turbulent Atmosphere
(University of Waterloo, 2013-09-04)A major field of research at the current time is that of implementing Quantum Key Distribution over large distances using satellites. If this protocol works with this technology, it will have huge implications on future ... -
An experimental investigation of the spin dynamics of dipolar spin ice
(University of Waterloo, 2012-04-27)The low temperature spin dynamics of the canonical dipolar spin ice materials is examined. The ac susceptibility of dipolar spin ice materials Ho2Ti2O7 and Dy2Ti2O7 is measured to lower temperatures and frequencies than ... -
Experimental prospects for detecting the quantum nature of spacetime
(University of Waterloo, 2017-09-21)This thesis is concerned with advancing the confrontation between relativistic quantum information (RQI) and experiment. We investigate the lessons that some present-day experiments can teach us about the relationship ... -
Experimental quantum communication in demanding regimes
(University of Waterloo, 2011-08-02)Quantum communication promises to outperform its classical counterparts and enable protocols previously impossible. Specifically, quantum key distribution (QKD) allows a cryptographic key to be shared between distant parties ... -
Experimental Quantum Information Processing with Photons
(University of Waterloo, 2013-08-30)This thesis describes experimental generation, manipulation and measurement of quantum information using photon pairs emitted in bulk crystals. Multi-photon sources engineered during the course of this thesis have proven ... -
Experimental search for long-range forces in neutron scattering via a gravitational spectrometer
(American Physical Society, 2014-04-09)In this work we introduce a method of measuring low-energy scattering cross section with a gravitational spectrometer. In this method we add atoms (i.e., He) to the gravitational spectrometer filled with a target gas of ... -
An experimental study of single hole spin qubit coherence in a GaAs/AlGaAs double quantum dot device
(University of Waterloo, 2024-01-15)This thesis discusses a series of experiments performed on a p-type laterally-gated GaAs/AlGaAs double quantum dot device. The main purpose of these experiments was to explore the potential of a theoretically-predicted ... -
Experimentally Testable Noncontextuality Inequalities Via Fourier-Motzkin Elimination
(University of Waterloo, 2015-09-29)Generalized noncontextuality as defined by Spekkens is an attempt to make precise the distinction between classical and quantum theories. It is a restriction on models used to reproduce the predictions of quantum mechanics. ... -
Experiments with Generalized Quantum Measurements and Entangled Photon Pairs
(University of Waterloo, 2009-11-02)This thesis describes a linear-optical device for performing generalized quantum measurements on quantum bits (qubits) encoded in photon polarization, the implementation of said device, and its use in two diff erent but ... -
An Exploration of Clustering Statistics and Tidal Alignments in the Context of Group Catalogues
(University of Waterloo, 2021-10-04)The use of three-dimensional galaxy surveys and large cosmological simulations of the galaxy distribution has advanced our understanding of large-scale structure over the last few decades. At the forefront of this are ... -
Exploration of Higher-Order Quantum Interference Landscapes
(University of Waterloo, 2017-08-31)Earth, Moon and Sun unite when they star together in the three-body problem, whose intricate plot still baffles us today. For some reason, the factorization of the two-body problem into two one-body problems does not, in ... -
An Exploration of Locality, Conservation Laws, and Spin
(University of Waterloo, 2017-01-23)Conservation rules are central to our understanding of the physical world, they place re- strictions on how particles can move and dictate what can occur during an interaction. However, it is often taken for granted how a ... -
An Exploration of Secure Circular Multi-Party Quantum Computation
(University of Waterloo, 2022-09-26)Multi party quantum computation (MPQC) is any quantum cryptographic protocol where multiple untrusted users collaborate to perform calculations on their combined data without revealing their private information. MPQC is ... -
Explorations in black hole chemistry and higher curvature gravity
(University of Waterloo, 2018-08-08)This thesis has two goals. The primary goal is to communicate two results within the framework of black hole chemistry, while the secondary goal is concerned with higher curvature theories of gravity. Super-entropic ...